METHOD FOR SYNTHESIS OF ALKYL PHOSPHORUS ETHERS Russian patent published in 2023 - IPC C07F9/09 C08K5/521 C08K5/05 C09K23/14 

Abstract RU 2809226 C1

FIELD: alkylphosphoric ethers.

SUBSTANCE: invention relates to methods for producing alkylphosphoric ethers used as a hydrotrope, wetting agent, dispersant, corrosion inhibitor and degreaser. The method involves phosphorylation of oxyethylated alcohols containing 1-25 ethoxylated units and 6-25 carbon atoms or ethoxylated linolenic alcohol containing 3 or 5 ethoxylated units, or erucic alcohol with a degree of ethoxylation of 5EO, using phosphorylation agent with a mass ratio of alcohol to phosphoric anhydride from 3:1 to 10:1. Mixing of components is carried out with a stirring frequency of 8000 rpm for no more than 30 minutes, ensuring that the reaction temperature is maintained at 60-80°C and phosphorylation products are obtained containing 93-96 wt.% of a mixture of diesters and monoesters of phosphoric acid.

EFFECT: simplified method for obtaining target products with less time and energy costs.

1 cl, 6 ex

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RU 2 809 226 C1

Authors

Andriyanov Vladislav Dmitrievich

Trushkov Aleksej Vitalevich

Dates

2023-12-07Published

2022-11-09Filed